Mortimer b



(No Model.)

M. B. MILLS. TRAGK PUMP APPARATUS.

No. 447,576. Patented Mar. 3, 1891.

' pump-lever.

NIT-1: STATES ATENT OF ICE.

MORTIMER B. MILLS, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE BOGUE & MILLS MANUFACTURING COMPANY, OF SAME PLACE.

TRACK-PUM P APPARATUS.

SPECIFICATION forming part of Letters Patent No. 447,576, dated March 3, 1891.

Application filed September 22, 1890. Serial No. 365,804- (No model.) I

To all whom it may concern:

Be itknown that 1,.MORTIMER B. MILLS, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Track-Pump Apparatus, of which the following is a specification.

My invention relates to an improved apparatus for transmitting the weight of a car or train of cars moving on a track to a pump to utilize the weight of the moving body for actuating the pump to produce power by storing air under pressure or for pumping water.

The primary object of my improvement is to utilize the weight of the train in such a manner as to produce a gradual stroke of the This is an important object to be accomplished, particularly for pumping air or gas, since if the pump-lever be actuated with a sudden stroke, as it essentially is in a track-pump the lever of which is, as commonly, operated by the pressure of the flanges of car-wheels passing over it, the pump-piston is moved so quickly as to prevent the vacuum created by its movement for one stroke from sucking in the supply of fluid before the piston is returned by the opposite stroke.

Figure 1 in the accompanying drawings is in-the nature of a diagram, showing by a view in broken sectional elevation a portion of a railroad-track having operatively connected with it my improved track-pun'ip apparatus. Fig. 2 is a section taken at the line 2 on Fig. I, viewed in the direction of the arrow and showing by a somewhat exaggerated representation the upper surfaces of the ties some distance below the base of the rail.

To apply my improvement in a manner to render it operative, the rail with which the connection is made, as hereinafter described, must be so supported in its position in the railway-track as to yield under the weight of a car or train moving upon it, the required manner of yielding being that it be capable of being depressed by the weight upon it and resume its normal position when the weight is thence removed. To this end the track may be designedly prearranged for my purpose by so laying it, as indicated in Fig. 2,

that it will be actuated, in the manner described, for my purpose, or it may be applied at locations in v the track where either the rails have become loose with the wear upon them, or where they are sustained on a support which will readily yield for effecting the desired purpose under the weight of a car, as on a bridge.

.A is a rail of a railroad-track, and B is a clamp secured to the base of the rail. To one side of the track the air-pump C is located, being shown in its preferred position namely, undergroundwhere its contents will be protected against freezing and confined in a suitable housing D, with its out-letpipe 0 leading, presumably;to a point of storing or utilizing the compressed air from the pump, as to a storage-cylinder, or to a pneumatic gate, switch, signal, or other object to be actuated by the force of air-pressure.

E is a lever pivoted at one end to the bearing afforded by the clamp B below the rail A, and thus practically secured directly to the rail. Near the end to which the lever is connected with the rail it is fulcrumed, as represented at 50, upon a suitable support p, properly located between the rail and the pump 0, with the piston-rod q of which it is pivotally connected. Thus of the two arms of the lever that between its fulcrum and the rail is very short, while that between the fulcrum and pump is comparatively long, to cause the limited movement permitted by the confining means for the rail to produce a comparatively and desirably great extent of movement of the long arm of the lever.

Owing to the flexible manner of supporting the rail A in any of the ways described, when a car moves on it, it presses it down near where the lever E is connected, thus producing one stroke of the lever, and when the car clears the rail the latter springs into its normal position and thereby produces the opposite stroke of the lever, thus actuating the pump with the required gradual stroke.

By means of my improvement an effectively and reliably operative pumping apparatus may be readily applied to any desired point in a railroad-track.

What I claim as new, and desire to secure by Letters Patent, is

1. In combination, a rail A of a railroadtrack supported in position to yield under the weight of a car moving upon it, a support pat a side of the rail, a pump 0, confined underground, and a lever E, fulcrurned on the said support and connected at opposite ends, respectively, with the rail and piston-rod of the pump, substantially as described.

2. In combination, a rail A of a railroadtrack supported in position to yield under the weight of a car moving upon it, and havinga clamp B, a pump 0 in a housing D, a

support 19 near the rail, and a lever E, pivoted at one end to, the clamp below the rail, fulcruined to the support 19, and pivotally connected at its opposite end with the piston-rod q of the pump, the Whole being constructed and arranged to operate substantially as described.

MORTIMER B. MILLS.

In presence of- J. W. DYRENFORTH, M. J. FROST. 

